学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语
听音,选出你听到的单词。
(       ) 1. A. cool                    B. cold                                C. cow
(       ) 2. A. these                    B. those                         C. they
(       ) 3. A. how                    B. hi                           C. hen
(       ) 4 A. goat                   B. coat                        C. come
(       ) 5 A. she                    B. sheep                        C. shorts
(       ) 6. A. degree                        B. dollar                        C. dinner
(       ) 7. A. horse                   B. hot                           C. hurry
(       ) 8. A. go to bed               B. go home                   C. get up
(      ) 9. A. farm                        B. for                             C. far
(       ) 10. A. put on                 B. try on                  C. put away
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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